Ties victor jabggi



(No Model.)

U. V. JAEGGI. ALARM LOCK.

Patented Sept. 27, 1887 r R111: 8% H, :W 5: M F n 1 H h J F ZN VENTUH N,PETERS. Pholo-Lnhagnphw, Washillgion, D. c.

llnirnn STATES PATENT Orricn.

VICTOR JAEGGI, OF AUBURN, SOUTH AUSTRALIA.

ALARM-=LOCK.

SPECIPICATION forming part of Letters Patent No. 370,4:80, datedSeptember 27, 1887.

' Application filed May 26, 1886. Serial No. 203,286. (No model.)

To all whom it may concern:

Be it known that I, Uns VIGTORJAEGGI, a subject of the Queen of GreatBritain, residing at Auburn, in the Province of South Australia,watch-maker, have invented a new or Improved Alarm-Lock, of which thefollowing is a specification.

Myinvention relates to an improved construction of alarm -locks fordoors, safes, or

to other purposes, whereby the mechanism actuating the alarm is greatlysimplified and the cost of its construction materially decreased. Inorder to accomplish this I dispense with the use of springs and actuatethe alarm by 1 means of a lever connected with a bolt and latch of thelook. This lever is so placed that neither the latch nor the bolt can bedisturbed without sounding the alarm. Forming part of the lever orattached to it is a rack, which,

by means of a pinion, actuates a scape-wheel and pallets andthrough thema hammer and bell, in the ordinary manner. The pinion of the scape-wheelbeing attached to a clutch kept in position by a circular spring, can bethrown in and out of gear by a forked lever projecting from the side ofthe lock-case.

By reference to the accompanying drawings it will be seen that Figure lis a sectional elevation of the lock, and Fig. 2 is a general plan ofit.

A is the lock-case; B, the bolt having a stud, l3, projecting inward; O,the latch; D, the socket of the handle-bar; E, a flat spring actuating(J; F, a lever pivoted at G and con- 5 structed with a segmental rack,H, and an up 0 actuating the lever F, M, a stud with lockcase, retainingF in position; N, the escapement-wheel of the alarm provided with alaterally-movable pinion, R, attached to aclutch and spring-lever, T, asshown in Fig. 2 O, the

5 vibrating bar, with hammer 0 attached; 1?,

the bell 3 Q, the bridge attached to the lockcase.

Fig. 2 shows the alarm-movements more clearly. H, as before, is therack; N, the

go scape-wheel tired to an arbor pivoted in the lock-case and the bridgeQ; It, a movable pinion actuated by the rack H; S, a clutch, half ofwhich is attached to the escapement-wheel N and half to the pinion R; T,a notched spring-lever pivoted on a stud attached to the necting-rod K.This, as before described, be-

ing attached to the rack-lever F, will raise it and cause theescapement-wheel to revolve, and thus sound the alarm. As soon as thehandle is released the springs E- and L will return the latch and leverF to their former position of rest, at the same time again sounding thealarm. The stud B, projecting inward against the side of the raisedsocket I, renders it impossible to move the bolt, either in unlocking orlooking, without first raising the lever F. F, it will be noticed, isconstructed with a' lower projection, f, whereon the key presses andraises the lever on being turned. As soon as the lever F is raised, thesocket I will allow the stud B to pass, and the operation of locking orunlocking can be completed. The socket I and the stud B. should extendsufficiently low, that when thelever Fis raised the bolt B is stillretained in position, the length of the rod K being similarly adjusted.The alarm meanwhile sounds as the lever F rises or falls. The rod K,passing through G, allows the lever torise without raising the latch. Bylaterally moving the lever T the clutch may be thrown out of gear and.the pinion R allowed to revolve without actuating the esoapement-wheelII. Should the latch G be raised suddenly or violently, the clutch S,being a serrated gear, as shown in Fig. 2, is so set as to rise out ofgear and allow the pinion to revolve, thus preventing breakage of theparts. The alarm will then not sound in the upward motion, but only inthe downward.

Having described my invention, I claim- 1. The combination,with an alarmmechanism, of a latch, O, a pivoted rack-lever, F, provided with asocket, I, a rod, K, a stud, M, and actuating-springs E L, arranged andop erating substantially as set forth.

' 2. In an alarm-look, the combination, with my name in the presence oftwo subscribing an escapement-wheel, N, and a movable pinwitnesses. ionR located on the shaft of said escapement-wheel, of a clutch of serratedform, and URS VICTOR JAEGGI' 5 a pivoted clutch-lever, T, substantiallyas set Witnesses:

forth. FRANCIS HUGH Snow,

In witness whereof I have hereunto signed JOHN EDWIN J EFFREYS.

